Onan MDKBT User Manual

10-1
10. Specifications
MDKBK MDKBL MDKBM MDKBN
ALTERNATOR: Single-Bearing, Brushless 4-Pole Rotating Field with Digital Electronic Regulation. See Genset Nameplate for Rating.
FUEL CONSUMPTION:
60 Hz: Full Load
Half Load
0.8 gph (3.0 liter/hr)
0.5 gph (1.9 liter/hr)
0.8 gph (3.0 liter/hr)
0.5 gph (1.9 liter/hr)
1.0 gph (3.8 liter/hr)
0.6 gph (2.3 liter/hr)
1.2 gph (4.5 liter/hr)
0.7 gph (2.7 liter/hr)
50 Hz: Full Load
Half Load
0.7 gph (2.7 liter/hr)
0.4 gph (1.5 liter/hr)
0.7 gph (2.7 liter/hr)
0.4 gph (1.5 liter/hr)
0.8 gph (3.0 liter/hr)
0.5 gph (1.9 liter/hr)
0.9 gph (3.4 liter/hr)
0.5 gph (1.9 liter/hr)
ENGINE: Kubota 4-Stroke Cycle, Indirect Injection, Water Cooled Diesel with Digital Electronic Governing
Model D1105 D1105 V1305 V1505
Number of Cylinders 3 3 4 4
Displacement 68.58 in
3
(1124 cm
3
) 68.58 in
3
(1124 cm
3
) 81.47 in
3
(1335 cm
3
) 91.44 in
3
(1499 cm
3
)
Bore 3.07 in (78 mm) 3.07 in (78 mm) 2.99 in (76 mm) 3.07 in (78 mm)
Stroke 3.09 in (78.4 mm) 3.09 in (78.4 mm) 2.90 in (73.6 mm) 3.09 in (78.4 mm)
Compression Ratio 22:1 22:1 22:1 22:1
Firing Order (Clockwise Rotation) 1-2-3 1-2-3 1-2-4-3 1-2-4-3
Fuel Injection Timing 16.5° BTDC 16.5° BTDC 16.5° BTDC 16.5° BTDC
Valve Lash (cold)
0.0071 − 0.0087 in
(0.18 − 0.22 mm)
0.0071 − 0.0087 in
(0.18 − 0.22 mm)
0.0071 − 0.0087 in
(0.18 − 0.22 mm)
0.0071 − 0.0087 in
(0.18 − 0.22 mm)
Lube Oil Capacity 4.2 quart (4.0 liter) 4.2 quart (4.0 liter) 4.5 quart (4.3 liter) 4.5 quart (4.3 liter)
Lube Oil Drain Connection 3/8 NPT 3/8 NPT 3/8 NPT 3/8 NPT
Coolant Capacity 4.2 quart (4.0 liter) 4.2 quart (4.0 liter) 5.3 quart (5.0 liter) 5.3 quart (5.0 liter)
Coolant Flow Rate: 60 Hz
50 Hz
5.0 gpm (18.9 liter/min)
4.2 gpm (15.9 liter/min)
5.0 gpm (18.9 liter/min)
4.2 gpm (15.9 liter/min)
5.0 gpm (18.9 liter/min)
4.2 gpm (15.9 liter/min)
5.0 gpm (18.9liter/min)
4.2 gpm (15.9 liter/min)
Raw Water Flow Rate: 60 Hz
50 Hz
6.0 gpm (22.7 liter/min)
5.0 gpm (18.9 liter/min)
6.0 gpm (22.7 liter/min)
5.0 gpm (18.9 liter/min)
6.0 gpm (22.7 liter/min)
5.0 gpm (18.9 liter/min)
6.0 gpm (22.7 liter/min)
5.0 gpm (18.9 liter/min)
Combustion Air Flow: 60 Hz
50 Hz
30 cfm (0.85 m
3
/min)
25 cfm (0.71 m
3
/min)
30 cfm (0.85 m
3
/min)
25 cfm (0.71 m
3
/min)
36 cfm (1.02 m
3
/min)
30 cfm (0.85 m
3
/min))
41 cfm (1.16 m
3
/min)
34 cfm (0.96 m
3
/min)
Heat Rejection to Ambient: 60 Hz
50 Hz
200 Btu/min (50 kcal/min)
179 Btu/min (45 kcal/min)
200 Btu/min (50 kcal/min)
179 Btu/min (45 kcal/min)
230 Btu/min (58 kcal/min)
190 Btu/min (48 kcal/min)
280 Btu/min (71 kcal/min)
210 Btu/min (53 kcal/min)
Maximum Angularity 10° Continuous, 22.5° Intermittent
Recommended Fuel No. 2-D Diesel Fuel: Spec EN 590 or ASTM D975
Recommended Coolant
Ethylene Glycol: Spec ASTM D5345 for 50/50 Prediluted Coolant or
ASTM D4985 for Concentrated Coolant with 40% to 60% quality water
CONNECTIONS:
Max Fuel Pump Lift 4 ft (1.2 m) 4 ft (1.2 m) 4 ft (1.2 m) 4 ft (1.2 m)
Fuel Supply 1/4 NPT female 1/4 NPT female 1/4 NPT female 1/4 NPT female
Fuel Return 1/4 NPT female 1/4 NPT female 1/4 NPT female 1/4 NPT female
Max Raw Water Pump Lift 4 ft (1.22 m) 4 ft (1.22 m) 4 ft (1.22 m) 4 ft (1.22 m)
Raw Water Inlet 1 in (25.4 mm) ID Hose 1 in (25.4 mm) ID Hose 1 in (25.4 mm) ID Hose 1 in (25.4 mm) ID Hose
Wet Exhaust Outlet 2 in (50.8 mm) ID Hose 2 in (50.8 mm) ID Hose 2 in (50.8 mm) ID Hose 2 in (50.8 mm) ID Hose
Dry Exhaust Outlet 1-1/4 NPT 1-1/4 NPT 1-1/4 NPT 1-1/4 NPT
Max Exhaust Back Pressure 3 in (76 mm) Hg 3 in (76 mm) Hg 3 in (76 mm) Hg 3 in (76 mm) Hg
KEEL COOLING:
Coolant Inlet & Outlet 1 in (25.4 mm) ID Hose 1 in (25.4 mm) ID Hose 1 in (25.4 mm) ID Hose 1 in (25.4 mm) ID Hose
Max Coolant Friction Head 1 psi (6.9 kPa) 1 psi (6.9 kPa) 1 psi (6.9 kPa) 1 psi (6.9 kPa)
Heat Rejection to Coolant: 60 Hz
50 Hz
950 Btu/min (239 kcal/min)
780 Btu/min (197 kcal/min)
950 Btu/min (239 kcal/min)
780 Btu/min (197 kcal/min)
1220 Btu/min (307 kcal/min)
980 Btu/min (247 kcal/min)
1420 Btu/min (358 kcal/min)
1160 Btu/min (292 kcal/min)
Thermostat Opening Temperature 185° F (85° C) 185° F (85° C) 185° F (85° C) 185° F (85° C)
BATTERIES:
Nominal Battery Voltage 12 volts (24 volts optional) 12 volts (24 volts optional) 12 volts (24 volts optional) 12 volts (24 volts optional)
Min CCA Rating − SAE @ 32° F (0° C) 360 amps 360 amps 500 amps 500 amps
Battery Charging @ 12/24 VDC 5/10 amps 5/10 amps 5/10 amps 5/10 amps
SIZE, WEIGHT, NOISE:
Without Enclosure
Dry Weight
Dimensions: L x W x H
525 lbs (238 kg)
32.4 x 18.9 x 22.1 in
(479.1 x 822.6 x 560.9 mm)
555 lbs (252 kg)
35.9 x 22.3 x 23.0 in
(911 x 566 x 585 mm)
640 lbs (290 kg)
40.7 x 22.3 x 23.0 in
(1033 x 566 x 585 mm)
640 lbs (290 kg)
40.7 x 22.3 x 23.0 in
(1033 x 566 x 585 mm)
With Enclosure
Noise
Dry Weight
Dimensions: L x W x H
− 66/65 dB(A) @ 60/50HZ
600 lbs (272 kg)
35.9 x 22.3 x 23.4 in
(911 x 566 x 593 mm)
66/65 dB(A) @ 60/50HZ
695 lbs (315 kg)
40.7 x 22.3 x 23.4 in
(1033 x 566 x 593 mm)
66/65 dB(A) @ 60/50HZ
695 lbs (315 kg)
40.7 x 22.3 x 23.4 in
(1033 x 566 x 593 mm)
Redistribution or publication of this document, 
by any means, is strictly prohibited.

Onan MDKBT Specifications

General

Brand	Onan
Model	MDKBT
Category	Portable Generator
Language	English